Gta online has the security of a candy shop
Like seriously, anyone can hack this game, even a helpless toddler by watching a Indian YouTube tutorial.
Because you connect directly to other players, your IP address is visible to everyone in your session. Modders can use this to identify your general location or launch DDoS attacks to knock you offline.
Remote Code Execution (RCE)
Even with the addition of BattlEye in late 2024, mod menu developers quickly created kernel-level bypasses. Since the game runs locally on your hardware, hackers have nearly unlimited time to reverse-engineer its defenses.
Unlike consoles, which use "walled garden" security that prevents users from easily modifying system files, the open nature of Windows makes it easy for "script kiddies" to inject malicious code directly into the game. processMod menus exploit this by sending commands that your game thinks are legitimate, such as this player just died or this player just gained $10 million
Switching from P2P to dedicated servers would require a massive overhaul of the game's core engine, which Rockstar has likely deemed too costly for a game this old.
They only keep the servers until gta 6 and to milk as much as possible for one last time